ADVENT 5m/16' Master Precision Class 1 Measuring Tape - The UK’s Only Class 1 accurate pocket tape measure. Ergonomically designed bevel case for maximum comfort, the finger grove design allows perfect fit in the HandUnique solid rubber label with patented rubber magnetic end hook designed to grab arc surfaces and side blade pause button. Self aligning end hook for internal and external measurements. Approved by National Weights and Measure.